show validation error in laravel code example

Example 1: how to show validation error in laravel blade

@if($errors->any())
    <div class="alert alert-danger">
        <p><strong>Opps Something went wrong</strong></p>
        <ul>
        @foreach ($errors->all() as $error)
            <li>{{ $error }}</li>
        @endforeach
        </ul>
    </div>
@endif

@if(session('success'))
    <div class="alert alert-success">{{session('success')}}</div>
@endif

@if(session('error'))
    <div class="alert alert-danger">{{session('error')}}</div>
@endif

Example 2: laravel get errors from validator blade

<!-- /resources/views/post/create.blade.php -->

<h1>Create Post</h1>

@if ($errors->any())
    <div class="alert alert-danger">
        <ul>
            @foreach ($errors->all() as $error)
                <li>{{ $error }}</li>
            @endforeach
        </ul>
    </div>
@endif

<!-- Create Post Form -->

Example 3: laravel validator make custom message

$rules = [
        'name' => 'required',
        'email' => 'required|email',
        'message' => 'required|max:250',
    ];

    $customMessages = [
        'required' => 'The :attribute field is required.'
    ];

    $this->validate($request, $rules, $customMessages);

Example 4: add error to laravel validation

//setup Validator and passing request data and rules
$validator = \Validator::make(request()->all(), [
    'due_date' => 'required',
    'template' => 'required'
]);

//hook to add additional rules by calling the ->after method
$validator->after(function ($validator) {
	
    if (request('event') == null) {
    	//add custom error to the Validator
        $validator->errors()->add('event', 'Please select an event');
    }

});

//run validation which will redirect on failure
$validator->validate();

//https://dcblog.dev/laravel-adding-custom-validation-errors

Example 5: laravel validation

Validator::extendImplicit('foo', function ($attribute, $value, $parameters, $validator) {
    return $value == 'foo';
});